Type-writing machine.



G. B. YAW.

TYPE WRITING MACHINE.

APPLICATION FILED JAN.8. 1909.

Patented Jan. 30, 1912.

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WITNEEEEE: INVENTEIR:

HISATTEIRNEY 'G. B. YAW.

- TYPE WRITING MACHINE.

APPLICATION FILED JAILB, 1909.

Patented Jan. 30, 1912.

2 BHEETS-SEEET 2.

WITNESSEE|= w INVENTEH:

' H-IEATTURNEV UNITED STATES PATENT OFFICE.

CLIO B. YAW, OF ARLINGTON, NEW JERSEY, ASSIG-NOR TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Jan. 30, 1912.

To all whom it may concern:

Be it known that I, (31.10 B. Yaw, citizen of the United States, and resident of Arlington, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Type-\Vriting Machines, of which the following is a specification.

My improvements in typewriting machines relate to means for turning the platen a predetermined fractional line space distance for the purpose of writing or inserting exponents, abbreviations and the like, where characters are to be printed above the normal line of writing.

The main object of the invention is to provide simple and effective means for this purpose and to these ends the invention consists in the various features of construction and combinations and arrangements of parts, all as will be hereinafter more fully described and particularly pointed out in the appended claims.

In the accompanying drawings, Figure l is a side elevation of the upper part of a Remington No. 10 typewriting machine embodying my improvements. Fig. 2 is a partial plan view of the same. Fig. 3 is an enlarged detail side view, with parts in section and showing the special auxiliary frac: tional line spacing mechanism partly in section and in normal position. Fig. 4 is a similar view showing the fractional spacer in position after operation, and showing also the type end of the type bar. Fig. 5 is a view to show the kind of work to be done with the auxiliary fractional spacer.

In the various views the same parts will be designated by the same numerals of reference.

l designates the uprights or posts and 2 the top plate of the said Remington machine. The carriage 3 is mounted to travel in roller bearings 4, 4, and carries the usual rotative platen 5 and line spacing mechanism. The platen is mounted at each end to rotate in a suitable bearing 6 in a vertically shiftable platen frame 6, not necessary to be described herein in detail. At one end of the platen is arranged the usual line spacing ratchet wheel 7 adapted to be turned step-by-step by a driving pawl 8, comprising part of the line spacing mechanism. Said pawl is pivotally mounted at 9 upon an arm 10 adapted to swing concentrically with the axis of the platen. and to said pawl is pivotally connected at 11 a rod or bar 12, whose opposite end is pivotally connected at 13 to one arm of a bell crank lever 14, pivoted at 15 in a lug on the carriage. To the other arm of the bell crank lever is pivotally attached at 16 the lower end of a link 17 whose upper end is pivotally connected at 18 to a short crank arm 19, attached by a screw 20 to the inner or rear end of a rock shaft 21 arranged to oscillate in a tubular bearing or housing 22 preferably formed integral with the carriage frame. This rock shaft extends forwardly beyond its bearing and is formed with a downwardly projecting hand piece 23 by which the line spacing pawl8 is operated, through the connections hereinbefore described, to rotate the platen step-by-step, the platen being adapted to be turned by the pawl either one, two or three notches of the line spacing ratchet wheel 7 according to the adjustment of the line space regulator (not shown). 1

For the purpose of holding the platen against accidental rotation and for maintaining it firmly in working position there is a detent or pressure roll 25 which normally bears down upon the line spacing ratchet wheel 7 in thespace between two of its teeth. The said detent roll is caused to press against the wheel 7 by means of a flat steel spring 26 upon the forward forked end of which said roll is pivotally mounted. The rear end of said spring 26 is movably secured to a bracket 27 rigid on the platen frame by a shouldered screw 28,-the shank of which is screwed into a tapped hole on the under side of said bracket and the enlarged head of said screw supports said spring andholds it against the bottom, of said bracket but not so tightly as to prevent the said spring from being moved endwise. Where the screw passes through the spring the latter is slotted longitudinally as at 29 to enable the spring to have a limited backward and forward movement. The ends of the slot 29 form stops against the shoulder of the screw to limit the back and forth movements of the spring.

Just forward of the bracket an upright or arm 30 is attached to the upper side of said spring, and a link 31 is pivoted. at its rear end, as at 32, to the upper end of. said arm 30 while the forward end of said link is pivoted at 83 to a key or hand lever 84. pivoted or fulcrumed at 35 upon forward extensions 27 of said bracket 27, the said extensions comprising parallel arms between which the link 81 and part of the hand lever 34 operate. A slot or cut-away 341. in the underside of the lever 34 receives andv houses the forward end of the link 31 and the pivot thereof.

The bracket 27 with its integral forked extension 27 is firmly secured on the back bar 36 of the platen frame 6 by a pin 37 and said bracket is further secured to the side bar 38 of the platen frame by ascrew 39.

The line spacing mechanism operates in the customary way, that is to say, when the. hand lever 23 is swung toward the right the rock shaft 21 is oscillated and the bell crank lever 1a is vibrated, the bar 12 moved rearwardly, the hooked end of the pawl 8 engaged with a tooth on the ratchet or line spacing wheel 7 and as the motion is continued the platen is turned simultaneously with said ratchet wheel the arm 10 rocking rearwardly as the platen turns.

hen it may be desired to turn the platen a definite distance less than the distance between two teeth on the ratchet wheel for the purpose of writing an abbreviation, say, as illustrated. in Fig. 5, the hand lever 34: pulled upwardly and forwardly as shown at Fig. 4. This movement of the hand. lever about its pivot 35 carries the link 31 upwardly and forwardly and the link draws the arm 30 and the spring 26 forwardly from the position shown in Fig. 3 to that shown at Fig. 4C. This movement of the spring causes the detent roll to move forwardly and turn the ratchet wheel and the platen connected therewith backwardly, in this case a distance of about one-half line space or about half the distance between two teeth of the ratchet wheel, as indicated by the full and dotted lines at Fig. l. Before the platen is thus turned backwardly the printing point registered with the dotted line a; it now registers with the dotted line I), and a lower case type c is shown as making its impression coincident with the line I), which is the point at which the abbreviation is to be written, and the type a may be said to represent any desired character, exponent or other mark. It will be understood that the space between the lines a and b at the surface of the platen represents the extent to which the platen is turned backwardly by the forward movement of the roll 25 under the action of the hand lever 34.

It will be observed from Fig. 4; that the forward movement of the roll 25 and the backward rotation of the platen thereby is limited by the rear end of the slot 29 striking against the shoulder of the screw 28. The platen may be returned to normal posi tion. by the roll 25, by pressing the lever 34: rearwardly and downwardly to the position shown at Fig. 3, the roll acting at this time to rotate the ratchet wheel. and the platen in the opposite direction and the return movement of the parts is limited by the forward end of the slot 29 striking against the screw 28 as seen in Fig. 3. I have however provided for automatically restoring the ratchet wheel and platen to normal position in case the operator should fail to do so manually by a return movement of the lever 34. To this end I have provided the line spacing pawl S with a nose or projection 40 having a curve at its lower rear end to match the surface of the roll 25 and this part 40 is adapted, during a regular line spacing movement through the handle 23, to engage the roll 25, as shown at Fig. 3, and, during the last part of the movement of the line spacing pawl, push against said roll and thereby force it and the sprin 26 back to normal position, the lever 34 of course returning simultaneously therewith.

There is no liability of the parts accidentally getting out of normal position, shown in Fig. 3, by reason of the substantial alinement of the pivots 32, and 3.5 which constitute a toggle lock for the device.

From the foregoing it will be noted that I have provided simple and convenient means for temporarily shifting the line of print a. predetermined distance whereby exponents or other characters may be written. above the characters comprising the normal line of writing. If it be desired to rig the machine for writing characters below the line of print, it is only necessary to reverse the arrangement of the line-shifting mechanism.

It will further be observed that the shifting of the line of print is effected through the movement of the platen detent, which, though preferable. need not necessarily be in the form of a roll.

lVhat I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination with a platen and its line spacing wheel, of line spacing mechanism, an independent line-shifter acting upon said line spacing wheel to turn the platen a predetermined distance less than a full line space distance and to maintain the platen in the position to which it has been turned, and arresting means acting on said line shifter as soon as it has turned the platen said predetermined distance.

2. In a typewriting machine, the combination with a platen and its line spacing wheel, of line spacing mechanism, a. bodily movable detent whereby said lme spacing wheel and platen may be turned a fractional line-space distance and held set in the posi tion to which it has been turned, and an arresting means operative to arrest said detent as soon as it has turned the platen said fractional line space distance.

3. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent co-active with said wheel and mounted on a movable support, means for moving said support and thereby moving said detent and causing movement. of the platen, said detent holding the platen set in the position to which it has been moved, and means for arresting said support after the platen has been turned a predetermined extent less than a full line space distance.

l. In a typewriting machine, the combination with a platen and its line spacing wheel, of a movable spring, a detent carried by said spring, and means for moving said spring and detent to cause movement of the platen, said detent holding the platen set in the position to which it has been moved.

5. In a typewriting machine, the combination with a platen and its line spacing wheel, of a bodily movable detent-coactive with said wheel, means for moving the same to move the platen and hold it set in the position to which it has been moved, and means for limiting said movement to an extent less than a unit of line space dis-- tance.

6. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a support for said cletent adapted to be moved back and forth limited distances, said distances being pre determined and less in extent than line space units of distance and means for effecting such movements, said support remaining set at the limits of its movements until moved from set posit-ion by hand.

7. In a typewriting machine, the combination with a platen and its line spacing wheel, a detent, a spring carrying the same and having a slot, means for supporting said spring and limiting its movements, and means for moving said spring and causing movements of the platen.

S. In a typewriting machine, the combination with a platen and its line spacing wheel, a spring carrying a detent, and also having a slot, a bracket and screw for sustaining said spring, and means for moving the spring longitudinally to effect through the detent and line spacing wheel a rotative movement of the platen.

9. In a typewriting machine, the combination with a platen and its line spacing wheel, a detent, a support therefor, hand operated means for-moving said support so as to cause the detent to turn the platen, said support remaining set in the position to which it has been moved, thus holding the platen in the position to which it has been turned, and a key for actuating said means from normal to abnormal position.

10. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a support therefor, and a hand lever connected to said support for moving it and the detent a limited dis- .tance, said support and said detent remaining set in the abnormal positions to which they havebeen moved by said hand lever, said detent cooperating with the line spac ing wheel both in the normal and abnormal positions of said detent to hold the platen against rotary movement.

11. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a support therefor, a link connected to said support, and a'hand lever connected to said link and operative to move said detent to abnormal position, said detent in itself operating in both its normal and abnormal positions to hold the platen against turning movements in either direction.

12. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent, a spring'support therefor, an arm rising from said support, a link connected at one end to said arm, and a hand lever to which the other end of said link is connected.

1?). In a typewriting machine, the combination with a platen and its line spacing wheel, of a. detent, a slotted spring supporting said detent, a screw and bracket for holding said spring, said bracket having a forked extension, a lever pivoted in said extension, an arm rising from said spring, and a link connecting said arm and said lever.

14. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent mounted on a movable support, and means for positively locking said support in normal position.

15. In a typewriting machine, the combination with a platen and its line spacing wheel, of a detent mounted on a movable support, and means for moving said detent from normal positiornsaid means being'also adapted to lock positively said detent in normal position.

16. In a typewriting machine, the combination with a platen, of a ratchet wheel op eratively connected therewith, line spacing devices cooperative with said wheel to turn the platen regular line space distances and auxiliary line spacing devices comprising a hand controlled detent normally engaging said wheel and operative at will on the wheel to turn the platen a predetermined extent less than a regular line space distance and to maintain the wheel in abnormal position after it has been so turned.

17. In typewriting machine, the combination with a platen, of two sets of line spacing devices operative independently of each other, one set of devices operating to line space the platen and at the same time automatically restore the other to normal position after said other has been operated.

18. In a typewriting machine, the combination with a platen, of regular line spao ing devices therefor and auxiliary line spacing devices, said auxiliary devices operating to turn the platen and hold it set in the position to which it has been turned, the reg ular line spacing devices operating automatically to restore the auxiliary line spacing devices to normal position after said means for setting said roll in one or another 1 means for setting said detent in abnormal auxiliary devices have been. operated to line space the platen.

19. In a typewriting machine, the combination with a platen, and a connected line spacing ratchet wheel, of a detent roll con- 5 stantly engaging said ratchet wheel, and

position, said detent in abnormal position cooperating with both ratchet teeth as before, and means operating automatically to restore said detent from abnormal to normal position.

Signed at the borough of Manhattan, city of New York, in the county of New York, and State of New York, this 7th day of Janaary, A. l). 1909.

CLIO B. YAW.

lVitnesses CHARLES E. SMITH, E. M. lVELLs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

